140% is the change from 100 to 240
Calculation steps:
[( 240 - 100 ) ÷ 100] x 100 = 140%
Formula
Percentage change = [(240 - 100) / 100] x 100
Subtract the new number by the original number
240 - 100 = 140
140 ÷ 100 = 1.4
1.4 x 100 = 140%
Example